FAMILY POLYANGIACEAE 



1031 



also occurs on decaying lichens and on 

 poplar bark kept moist. Quite common 

 m Polish soils according to Krzemien- 

 iewski (1927, loc. cit.). 



Illustrations: Thaxter (1897, loc. cit.), 

 PI. 31, Figs. 37-39. Baur, Arch. Protis- 

 tenkunde, 5, 1905, PI. 4, Figs. 14, 15, and 

 17. Quehl, Cent. f. Bakt., II Abt., 16, 

 1906, PI. 1, Figs. 8 and 16. Jahn, Bei- 

 trage zur botanischen Protistologie. I. 

 Die Polyangiden, Geb. Borntraeger. Leip- 

 zig, 1924, PI. 2, Fig. 12. Also Fig. A, 

 p. 9. Krzemieniewski, Acta Soc. Bot. 

 Poloniae, >t, 1926, 34, PI. IV, Figs. 42-43, 

 also var. velatum Plate IV, Figs. 44-46. 



9 . Polyangium aureum Krzemieniewski . 

 (Acta Soc. Bot. Pol., 7, 1930, 255.) 



Etjmiology: Latin, aureus, golden. 



Separated from Polyangium morula 

 on basis of pigmentation. 



Fruiting body: Cysts reddish-brown, 

 variable in number, embedded in yellow 

 slime to form a sorus with a common 

 slime envelope. Cysts nearly spherical 

 or slightly elongate, averaging 32 by 37 

 microns. Cyst wall orange-yellow, about 

 3.0 microns thick. Older cysts contain 

 shortened rods, a granular mass, and a 

 colorless or yellowish oleaginous liquid. 



Spores : Rod-shaped. 



Vegetative cells: Straight rods, of 

 uniform diameter, with rounded ends, 

 0.7 to 0.9 by 2.8 to 5.3 microns. 



Habitat: Soil. 



Illustrations : Krzemieniewski {loc. 

 cit.) Plate XVII, Figs. 14-17. 



10. Polyangium stellatum Kofler. 

 (Sitzber. d. kais. Akad. Wiss. Wien, 

 Math. -Nat. Klasse, 122 Abt., 1913, 19.) 



Etymology: Latin stellatus, stellate. 



Swarm stage (pseudo Plasmodium) :Not 

 described. 



Fruiting bodies : Cysts elongate, 80 to 

 120 microns broad, 160 to 200 microns 

 long, flesh-colored when young, brownish- 

 red when old, star-shaped with 2 to 9 rays 

 fixed by the narrowed base upon a kind of 

 hypothallus. 



Source and habitat : Found by Kofler 

 (1913, loc. cit.) on hare dung at Vienna. 



Illustrations: Kofler (1913, loc. cit.) 

 PI.?, Fig. 6. 



11. Polyangium ferrugineum Krzemie- 

 niewski. (Acta Soc. Bot. Poloniae, 5, 

 1927,97.) 



Etymology : Latin ferrugineus, dark 

 red, like iron rust. 



Swarm stage (pseudo Plasmodium) :Not 

 described. 



Fruiting bodies : Irregular, branched 

 and occasionally constricted coils. 

 Branches of same diameter as the main 

 tube. Cyst wall is brown-red. In the 

 interior no differentiation is visible. 

 Rods in cysts are relatively short and 

 thick, 0.8 to 1.1 microns by 2 to 2.5 mi- 

 crons, not definitely arranged. Close to 

 Archangium gephyra, but with cyst walls. 



Source and habitat : Krzemieniewski 

 {loc. cit.) from soil in Poland and on 

 rabbit dung. 



Illustrations : Krzemieniewski {loc. cit.) 

 PI. V, Fig. 21. 



12. Polyangium indivisum Krzemien- 

 iewski. (Acta Soc. Bot. Poloniae, 5, 

 1927, 97.) 



Etymology : Latin indivisus, undivided. 



Swarm stage (pseudo Plasmodium) : Not 

 described. 



Fruiting bodies : Similar to Poly- 

 angium Jerrugineum, but much smaller 

 and bright orange-yellow. Enclosed in 

 a similarly colored slime membrane. 

 Interior of coils undifferentiated. Cyst 

 rods 0.8 to 1.0 by 3 to 6 microns, straight, 

 and rounded on ends. Arranged per- 

 pendicularly to the wall, giving a netted 

 appearance resembling Melittangium. 



Source and habitat : From soils in 

 Poland, Krzemieniewski (1927, loc. cit.). 



13. Polyangium spumosum Krzemien- 

 iewski. (Acta Soc. Bot. Pol., 7, 1930, 

 254.) 



Etymology : Latin spumosus, foaming, 

 full of foam. 



